"""Shared test path setup.

The task-execution fixture proofs import the sibling `secrets-engine` source
checkout. Its root is located the same way as in test_task_execution_plan.py:
SECRETS_ENGINE_SOURCE_ROOT, defaulting to ../secrets-engine. Without this, the
proofs only import when an earlier test has already loaded the package, so
running one file alone fails.
"""
import os
import sys
from pathlib import Path

_SECRETS = Path(os.environ.get('SECRETS_ENGINE_SOURCE_ROOT',
                               str(Path(__file__).resolve().parents[2] / 'secrets-engine')))
if (_SECRETS / 'src' / 'secrets_engine').is_dir() and str(_SECRETS / 'src') not in sys.path:
    sys.path.insert(0, str(_SECRETS / 'src'))